Hello Eric,
I found this information on A Manx Note Book.
Legal Age for Marriage.
Roman law gave the minimum age for marriage as that of puberty which was 14 for boys and 12 for girls; these remained the legal age for marriage until the late 19th Century in Britain though that for girls seemed to be assumed also to be 14.
www.isle-of-man.com/manxnotebook/famhist/genealgy/marr.htm
Averil